Superheater.



ist

lilltllllhll bllilalltili-n tliiitllll'illll FFME,

sereni-marne.

imonline.

T0 all ile/tom iii may concern.'

Be it known that ft, Enn'en'i H. Fontina a, citizen of the United States, ref-idiiigijl at new York, county of Richmond, and tritate ot New York, have invented certain new and useful Improvements in Superheaterzr, ot which the 'following is a full, clear, and exact description. .l The object o? my present application .tor 'patent in an improvement in connection with water-tube boilers of the fio-Called vertical tube forni, of which the Sterling boiler may be regarded as typical, and iesides in a novel combination of e super-- heater `with such a boiler, and in the details of construction aceeesory thereto; 1n arranging a superheater in connection with a boiler et the type mentioned, while it is de-- sirable to utilize the boiler heating chamber of the setting as the location of the super-- heater, in order that the latter may receive heat directly from the gases which also heat the boiler, the precise location oif the super-A heater is, largely governed by the degree et superheat required so that .it han long been customary to place the device in one or another of the Several pannes; or paths followed liv the hot gases. ln all rasenI however-seine nieans of support for the superheater unisiy be provided, a d this preeentfi practical difficulties bv riason ot' the width o't the boiler settinueand the destructive effect ol 'the hot gase'lon any supports which may be inserted for the purpone. Furthermore, faire ports within the setting would have nothing to rest ou but the heating aurlai'fe oi the boiler, an arrangement which eeriouely in convenient because of the 'increased dilleiilty of removinef boiler tubes when neeeeeary lor purposes ot repair, and becaiiee o i the necea` sityvof strengthening parte which are not intended to carry Weights.

My present invention provides a plan whereby the entire superlieater ia located within the boiler heating; chainber in a position most favorable to ol'itaininn an high degree of siiperheat, and under conditions which insure the moet etYect-ive utilinatioii of the Superheater Surface, While not inten tering with the direct action oit' the hiet gases upon, and their free passage over tno boiler tubes.

According to my improvement a superl heater, of the ordinary type or 'loini known as the Mll-tube, that is a pluralitggi oi tubes;

bent in the forni ot' the letter li, and een Epeniiicntieii. of Letters Patent.

Application filed November 30, 1812. Serial. No. 73t,42.

Patented Ang. d. i914.

MMM..

nested at their ends; to parallel heaters, is i'ilafufd bei wil-en the iii-st and second or middle bende o' vertical tubes. The headers entend across the heating chamber horizontally, and are supported by hangers, pret'n erably embedded in the. setting or brick walls olt the structure that bruises the boiler, and Suspended i'roni or supported by the horizontal transverse steel beanie that in boilci'nv of this claas: are employed as the supports for the boiler drums. The bent tubes connecting these headers extend upward, Substantially parallel with the boiler tubes, thus occupying the upper portion of the space between the first and middle bends. In order, however, that the hot gases may passi over the banks `of tubes in uninterrupted Series vfrein end to end, a condition essential to economical operation, their path is determined and defined by baille plates .so disposed that the first pass or path followed by the gases in passing upwardly over the first or liront bank of, tubes. is enlarged rearwardly to include sullieient of the space between the i'iist and middle banks to accommodate the siiperheater. By this means the hot ganen are :forced to follow a path which includes practically the entire first bank of tubee, and so not come in Contact with the superheater:*outil utter passing over such tubee. This arrangement has inany'advantages.

in the accompanying drawing; lFinfnre 1 is a Cross .ecrtiou ofi' a` boiler equipped ivih a siiperheater iii 'the iniiuner above deseril'ied. and lfin. 2 ie a sectional plan in the line ir--m of Fig. l.

The boiler specifically illustrated consi te nl' three upper or ateani druins A, B and C. connected with a lower or vater drinn D by trout. middle and rear banks of tubes designated by u.. (i, und rrespectively, all located within the boiler heating chamber forined by the briekwork ,or setting' E. These banks of tubes: are in series as regarde the passage of the furnace nie-es, that is, the gases flow past the banks in succession and from end to end.y 'lhe grate, not shown, is; below the arched furnace top li. ln the rear of the middle bank li is a baille plate g' extending,r downward li'oni drum B, and in the rear of the tiret bank o is a baille plate g, eiztending upirardly-'troi'n the druni D to a point ver tieally beneath the rear header Il of the Siiperhcater S, 'from which point it extends upwardly to the said header or to the line of libe middle bank Z).

of Contact between the header and. the JLubes The path for gases 'thus defined. is extended upwardly to point near the upper middle drum E by a second baiiie g or by an extension of the baille g in case the available space permits. ln *front of this baille Wall is placed the superheater S, which, as above stated, comprises a pluralil';T of bent tubes connected lo horizontal transif'erse headers il, H', which ere, in turn, connected with the boiler and with the service steam main, respectively, in the usual Way. As will be seen, the headers constitute the superheating supports, and are thenr selves supported by hangers l preferably embedded in the bricliwork of 'the setting and depei'lding from I-benins l`hese llbeunis ere those usuallyv employed in oonnection with boilers of this type, and serve io support the boiler, the drums of which rest in chairs Z interposed between. thorn and the drums. The beams e' ib 'will be understood forni port of the usual freine, not shown, that is used with such boilers.

The special arrangement oi baille plates f/ and 7 above described is not of 'the ess-cnrs? of the invention, the mein feature oi which is the enlargement by balile Walls of the front pass for io include, in addition to the front benl; oi in suiicienl.- to accommodate the si This enlargement does not perniii. ai; leest to an appreciable :n our, a diver n ol' rho grises from ilu; u ,A .lons of the freni? bank` of' lulfes, n, e line of draft is not subslnulially liercd and the headers or other par@ or the superheeter affords an obseole in rhe more direct path 'for the gases along the baille "Wall,

That l elaiui is:

l. flllie combination willi. :i waterlube boilei` having; e plurality of banks of Vertin cally extending tubes iu series es regards the pesage of the furnace `grassen baffles between the banks for defining the path followed by the gases in passing' from one baille/lo the next, of superlieaie Lo1nprisin q a pluraliy of headers and connecting superheaer tubes, supported between rho tubes oi/he ironi bank and theupper portion oil the baille in the rear oil/"the same, as sel: orth.

2. The yCombination with a," Water tube boiler having plurality osibiinlrs of verri nceed by sul'ierlieeiing L lbes @Lending up .vardly` from ne he( fers ane supporre@ between che tu es o the freni b nlr zuid the and second benls, as forth.

3. r.' c con nnaision with iz sube in, a plureliy of bunks rei cally extending tubes in series as regards the passage of the fi il'l gases, oi bni'lles he tween lle said bunks rubies 'lor deiinir the paths followed, by ehe gases, e superheater comprising headers connected superhear ig nubes extending upwerdlyglroin me headers end located. between the iii-s; benk oi? iubes and the upper portion oil 'lhe baille bei' veen izue l'irsb and second banks, and supporre for headers depending from the means `lo; supporting ehe boiler ie setring, es sel; forth.

fl. The Combination Wil-li a Water tube boiler baring a plurali banks of 'vertically ez;- tending' tubes inseries es regards `he pes or' rho furnace gases, oil a baille ex'ending loroche lower portion of the bank o? tubes immediately bach of i; e seine, and along 'the upperfport" in oil' the second. benl; of rubes inunedieteljyf in freni; o saine, and a suerliealzer supper-lied in lai-ged path for Jbe grises formed by upper part of said baille, baelr of Lhe lirs beni: el" lzubes, as sery forth.'

5. mhe coiobina 'ion with a, boiler having n plurality of benl cally ein* 'riding bribes in series es r pass e el the cfases, befli l s delining 'the palzli the rises in passing from one benin izo c s superheeter comprising pluralinfgn lers and connecting superbes-iter tubes, supporred beibWee-n tubes o3? lie from', bank end he baile in 4|ehe of the serine, as set jorihc upper portion of the beilie bezween libe iirst ln eestinioujy' whereof i my signaiure heater comprising; a plurality of headers eoni 

